147 years old now in 2026 - what year born?

Today, 28 October 2026 if a person is 147 years old now, what year was he born? See below:

If 147 years old, year of birth is:
1878 or 1879*

*It depends on whether he was born before or after 1 January 1879.

If now 147 years and his year of birth 1878 if he was born after 28 October 1878 until 31 december 1878 inclusively, and his year of birth is 1879 if he was born from 1 January 1879 to 28 October 1879.

Other examples:

If now 6 years, year of birth 2019 or 2020
If now 13 years, year of birth 2012 or 2013
If now 25 years, year of birth 2000 or 2001
If now 75 years, year of birth 1950 or 1951

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